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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7775776 | Method and apparatus to pump liquids from a well A single conduit lift pump is disclosed that only requires a single fluid conduit for both the driving fluid and the pumping action of the pump in a well bore. Fluid pressure communicated to the pump by the single fluid conduit drives the pump to load a resilient me... | 08/17/2010 |
| 7406887 | Pumping unit with variable work stroke and return stroke torque factor characteristics A pumping unit system having vertical sampson post, a walking beam pivotally supported at the upper end of the sampson post and a horsehead affixed at a forward end thereof that supports a reciprocated sucker rod string, including a gear reducer mounted at selectabl... | 08/05/2008 |
| 7402028 | Pressurisation system A pressurization device is described mobilizing gravity to mobilize seawater and to employ a weight (56) for gravitionally applying a force to and thereby pressurizing an enclosed pocket (58) of seawater, resulting in low energy utilisation. Energy is ... | 07/22/2008 |
| 7261523 | Pump system for delivering pressurized liquid A pump system for providing a pressurized liquid comprising an elevated supply reservoir of a liquid at a first pressure; at least one pair of vertically reciprocating liquid transfer vessels (each of the transfer vessels having a force transfer assembly operatively... | 08/28/2007 |
| 7222487 | Portable electricity generating gravity driven wheel system A wheel assembly with tangentially attached fluid receptacles around the perimeter rotates to power a gravity driven fluid electricity generating assembly. A plunger pump assembly with a drive wheel powered by the wheel assembly pumps a quantity of fluid to fill a f... | 05/29/2007 |
| 6817180 | Gravity as a source of renewable energy The invention discloses a portable hydroelectric apparatus which converts the kinetic energy of water caused by gravity into electrical energy. This conversion is accomplished without the presence of a river or stream. A new type of buoyancy motor is disclosed which... | 11/16/2004 |
| 6644937 | Water powered pumping system with fluid link A water powered pumping system includes a leverage connected to a water source and moving upward and downward by using a water weight to produce a lever movement, a hydraulic pump pushed by the leverage to move reciprocally, and a water pump pushed by the... | 11/11/2003 |
| 5988991 | Simplified energy transforming structure Disclosed is a simplified energy transforming structure which utilizes the weight of water stored at high position to pull up a heavy piston in a hydraulic cylinder, so that the piston can thereafter descend due to gravity and forces water flowing into th... | 11/23/1999 |
| 4344286 | Energy converter machine An energy convertor machine generally includes an elongated member and at least two sets of one or more elastomeric bag members, each elastomeric bag member having a liquid with a low vaporization temperature disposed therein, wherein heating means and a ... | 08/17/1982 |
| 4286928 | Pumping unit A pumping unit for removing oil or the like from a well. The unit comprises a tower, a sump at the bottom of the tower and a reservoir at an elevation above the sump. A liquid, such as oil or water, is pumped from the sump up to the reservoir. A wheel is ... | 09/01/1981 |
| 4264285 | Downhole cleaner assembly for cleansing lubricant of downhole turbo-machines within wells While in a well, a downhole turbo-machine of a series of turbine stages and pump stages is driven by power fluid circulated into the turbine stages from the surface. A branch stream from the power fluid passes through a centrifugal cleaner and is cleansed... | 04/28/1981 |
| 4226573 | Hydraulically-operated machines A hydraulically-operated machine adapted to receive water at an upper level from a relatively large reservoir and to discharge the water to a lower level, which includes a piston head carried upon a piston rod mounted for vertical movement in guide bushes... | 10/07/1980 |
| 4085544 | Plant supporting, moving and watering apparatus A garden arrangement including a conveyor assembly with a plurality of longitudinally spaced mounting means supporting containers utilizing growth material, the conveyor being arranged along a predetermined path whereby the containers may be successively ... | 04/25/1978 |
| 4076447 | Water-power motor The invention relates to a water-power motor adapted to be driven by a rising and falling water surface, for instance the wave motion thereof. The novel features of the invention reside in that the water-power motor comprises one or more driving wheels ea... | 02/28/1978 |
| 3994629 | Mechanism for tapping the surf energy A mechanism utilizing the energy of the surf including a gravitational bucket with a rack on the outside thereof. The rack engages a gear which drives a reciprocating water pump. The pump transports water to a tank for use later as a source of steady cont... | 11/30/1976 |
